Aluminum alloy shapes
    5.
    发明授权
    Aluminum alloy shapes 失效
    铝合金形状

    公开(公告)号:US4039355A

    公开(公告)日:1977-08-02

    申请号:US550223

    申请日:1975-02-18

    CPC分类号: C22C21/08 Y10T428/31935

    摘要: An aluminum alloy consising essentially of 0.65 to 0.75% by weight of magnesium and 0.50 to 0.60% by weight of silicon or 0.47 to 0.57% by weight of magnesium and 0.75 to 0.85% by weight of silicon, 0.15% to 0.25% by weight of iron, less than 0.05% of an impurity selected from the group consisting of copper, manganese, zinc, chromium, and titanium and the balance aluminum, the aluminum alloy being subjected to aging treatment at a temperature below 200.degree. C for 20 to 50 minutes to obtain 0.2% proof stress larger than 11 kg/mm.sup.2, ultimate tensile strength larger than 20 kg/mm.sup.2 and elongation more than 8%. Aluminum alloy shapes are formed of the above aluminum alloy by extrusion forming of the aluminum alloy to obtain an extrusion, coating a film on the surface of the extrusion with a water-soluble paint after forming thereon a ground film, heating the extrusion at a temperature below 200.degree. C for 20 to 50 minutes to effect printing and hardening of the coated film and age hardening of the extrusion at the same time.

    摘要翻译: 一种铝合金基本上占0.65至0.75重量%的镁和0.50-0.60重量%的硅或0.47至0.57重量%的镁和0.75至0.85重量%的硅,0.15重量%至0.25重量%的硅, 铁,小于0.05%的选自铜,锰,锌,铬和钛的杂质,余量为铝,铝合金在200℃以下进行20-50分钟的时效处理 获得大于11kg / mm2的0.2%屈服应力,极限抗拉强度大于20kg / mm2,伸长率大于8%。 铝合金的形状由上述铝合金形成,通过铝合金的挤出成型得到挤出,在其上成型后用水溶性涂料在挤压成形表面上涂覆膜,在该温度下加热挤出 在200℃以下20〜50分钟,同时进行涂膜的印刷硬化和挤出的时效硬化。

    Autonomous mowing vehicle and apparatus for detecting boundary of mowed
field
    8.
    发明授权
    Autonomous mowing vehicle and apparatus for detecting boundary of mowed field 失效
    用于检测割草边界的自动割草车辆及装置

    公开(公告)号:US5528888A

    公开(公告)日:1996-06-25

    申请号:US362258

    申请日:1994-12-22

    摘要: An apparatus for detecting a extending boundary between fields mowed and not mowed by an cutting blade mechanism of an autonomous vehicle for the mowing of lawn grass, comprises a plurality of rocking members provided to be aligned in a lateral direction of the vehicle under a body of the vehicle, a plurality of rocking condition sensors provided to detect rocking conditions of the respective rocking members, and a control unit provided to determine a boundary between a rocking member rocked by taller lawn grass and a rocking member not rocked as the boundary between the mowed field and not mowed field in response to signals from the rocking condition sensors. There is further provided a method for shifting the vehicle to a ready position of a next lane to be mowed in the work area based on the result of the detection by the boundary detecting apparatus.

    摘要翻译: 一种用于检测由草坪草割草的自动车辆的切割刀片机构剪切而未剪切的田间之间的延伸边界的装置,包括多个摆动构件,设置成在车辆的横向方向上对齐, 车辆,多个摇摆状态传感器,用于检测各摇摆构件的摇摆状态;以及控制单元,用于确定由较高草坪草摇动的摇摆构件与未摇摆的摇摆构件之间的边界,作为剪切之间的边界 响应于来自摇摆状态传感器的信号,场和不割草场。 还提供了一种用于基于边界检测装置的检测结果将车辆移动到要在工作区域中修剪的下一车道的就绪位置的方法。

    Internal combustion engine
    9.
    发明授权
    Internal combustion engine 失效
    内燃机

    公开(公告)号:US4280455A

    公开(公告)日:1981-07-28

    申请号:US4133

    申请日:1979-01-17

    摘要: An internal combustion engine comprises a cylinder, a piston reciprocating in the cylinder, piston rings arranged on the periphery of the piston, and at least a pair of oil ports symmetrically provided in a wall member of the cylinder. The oil ports communicate with the space between the wall member and the piston and are positioned to open onto the portion below the lowermost piston ring during the reciprocation of the piston. A system supplies a portion of the lubricating oil for the internal combustion engine under pressure to this space through the oil ports, and conduits communicate the oil ports with the supply system.

    摘要翻译: 内燃机包括气缸,活塞在活塞中往复运动的活塞,设置在活塞周边的活塞环,以及至少一对对称设置在气缸的壁构件中的油口。 油口与壁构件和活塞之间的空间连通,并且定位成在活塞往复运动时打开到最下面的活塞环下方的部分。 系统通过油口将一部分用于内燃机的润滑油在压力下供给到该空间,并且导管将油口与供油系统连通。

    Exhaust timing control apparatus for two-cycle engines
    10.
    发明授权
    Exhaust timing control apparatus for two-cycle engines 失效
    双循环发动机排气定时控制装置

    公开(公告)号:US06189494B1

    公开(公告)日:2001-02-20

    申请号:US09311304

    申请日:1999-05-14

    IPC分类号: F02B7502

    CPC分类号: F02D13/0284 Y02T10/18

    摘要: When an engine is operated at a low and medium speed range, since the combustion pressure introduced into a pressure chamber of a valve drive unit is relatively small, a control valve is projected toward the cylinder by the biasing force of a spring so as to lower the upper edge of the exhaust port. At the same time, in conjunction with this motion of the control valve, a resonance chamber is opened so as to communicate between the resonance chamber and the exhaust port, thereby the engine power is increased. When the engine is operated at a high speed range, since the combustion pressure is relatively large, the control valve goes away from the cylinder so as to enlarge the exhaust port and at the same time, in conjunction with this motion of the control valve, the resonance chamber is closed, thereby the engine power is increased.

    摘要翻译: 当发动机在低速和中速范围下运行时,由于引入阀驱动单元的压力室的燃烧压力相对较小,所以通过弹簧的作用力使控制阀向气缸突出,从而降低 排气口的上边缘。 同时,结合控制阀的这种动作,共振室被打开,以便在共鸣室和排气口之间连通,从而增加发动机功率。 当发动机在高速范围下工作时,由于燃烧压力相对较大,所以控制阀离开气缸,从而扩大排气口,同时结合控制阀的运动, 共振室关闭,从而发动机功率增加。